package njust.tables.order;

import java.util.Date;
import java.util.List;
import org.hibernate.LockOptions;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Example;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.transaction.annotation.Transactional;

/**
 * A data access object (DAO) providing persistence and search support for
 * TbOrder entities. Transaction control of the save(), update() and delete()
 * operations can directly support Spring container-managed transactions or they
 * can be augmented to handle user-managed Spring transactions. Each of these
 * methods provides additional information for how to configure it for the
 * desired type of transaction control.
 * 
 * @see njust.tables.order.TbOrder
 * @author MyEclipse Persistence Tools
 */
@Transactional
public class TbOrderDAO {
	private static final Logger log = LoggerFactory.getLogger(TbOrderDAO.class);
	// property constants
	public static final String _BID = "BId";
	public static final String USER_ID = "userId";
	public static final String ORDER_TIME = "orderTime";
	public static final String REASON = "reason";
	public static final String COLLEGE = "college";
	public static final String APPROVED = "approved";
	public static final String STATE = "state";
	public static final String BACK_REASON = "backReason";

	private SessionFactory sessionFactory;

	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	private Session getCurrentSession() {
		return sessionFactory.getCurrentSession();
	}

	protected void initDao() {
		// do nothing
	}

	public void save(TbOrder transientInstance) {
		log.debug("saving TbOrder instance");
		try {
			getCurrentSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(TbOrder persistentInstance) {
		log.debug("deleting TbOrder instance");
		try {
			getCurrentSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public TbOrder findById(java.lang.Integer id) {
		log.debug("getting TbOrder instance with id: " + id);
		try {
			TbOrder instance = (TbOrder) getCurrentSession().get(
					"njust.tables.order.TbOrder", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(TbOrder instance) {
		log.debug("finding TbOrder instance by example");
		try {
			List results = getCurrentSession()
					.createCriteria("njust.tables.order.TbOrder")
					.add(Example.create(instance)).list();
			log.debug("find by example successful, result size: "
					+ results.size());
			return results;
		} catch (RuntimeException re) {
			log.error("find by example failed", re);
			throw re;
		}
	}
	
	public List findByhql(String queryString) {
		try {
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}
	
	public List findByProperty(String propertyName, Object value) {
		log.debug("finding TbOrder instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from TbOrder as model where model."
					+ propertyName + "= ?";
			Query queryObject = getCurrentSession().createQuery(queryString);
			queryObject.setParameter(0, value);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find by property name failed", re);
			throw re;
		}
	}

	public List findByBId(Object BId) {
		return findByProperty(_BID, BId);
	}

	public List findByUserId(Object userId) {
		return findByProperty(USER_ID, userId);
	}

	public List findByOrderTime(Object orderTime) {
		return findByProperty(ORDER_TIME, orderTime);
	}

	public List findByReason(Object reason) {
		return findByProperty(REASON, reason);
	}

	public List findByCollege(Object college) {
		return findByProperty(COLLEGE, college);
	}

	public List findByApproved(Object approved) {
		return findByProperty(APPROVED, approved);
	}

	public List findByState(Object state) {
		return findByProperty(STATE, state);
	}

	public List findByBackReason(Object backReason) {
		return findByProperty(BACK_REASON, backReason);
	}

	public List findAll() {
		log.debug("finding all TbOrder instances");
		try {
			String queryString = "from TbOrder";
			Query queryObject = getCurrentSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

	public TbOrder merge(TbOrder detachedInstance) {
		log.debug("merging TbOrder instance");
		try {
			TbOrder result = (TbOrder) getCurrentSession().merge(
					detachedInstance);
			log.debug("merge successful");
			return result;
		} catch (RuntimeException re) {
			log.error("merge failed", re);
			throw re;
		}
	}

	public void attachDirty(TbOrder instance) {
		log.debug("attaching dirty TbOrder instance");
		try {
			getCurrentSession().saveOrUpdate(instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public void attachClean(TbOrder instance) {
		log.debug("attaching clean TbOrder instance");
		try {
			getCurrentSession().buildLockRequest(LockOptions.NONE).lock(
					instance);
			log.debug("attach successful");
		} catch (RuntimeException re) {
			log.error("attach failed", re);
			throw re;
		}
	}

	public static TbOrderDAO getFromApplicationContext(ApplicationContext ctx) {
		return (TbOrderDAO) ctx.getBean("TbOrderDAO");
	}
}